<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片区域 -->
    <el-card>
      <el-alert title="添加上商品信息" type="info" :closable="false">
      </el-alert>
      <!-- 
步骤条 -->
      <el-steps
        :space="200"
        :active="activeindex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- tab栏 -->
      <el-form
        :model="addForm"
        :rules="addrules"
        ref="addruleForm"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeindex"
          :before-leave="beforetableft"
          @tab-click="tablecilck"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                @change="handleChange"
                :props="cataprops"
                expand-trigger="hover"
              ></el-cascader
            ></el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="(item, index) in manyTableData"
              :key="item.attr_id"
            >
              <!-- 复选框组
         -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlytabledate"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              action="http://timemeetyou.com:8889/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerobj"
              :on-success="handelsuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="btns" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览 -->
    <el-dialog title="图片预览" :visible.sync="prewVisible" width="50%">
      <span>
        <img :src="previewpath" alt="" class="prive" />
      </span>
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";
export default {
  data() {
    return {
      activeindex: "0",
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        //商品所属的分类数组
        goods_cat: [],
        pics: [],
        goods_introduce: "",
        attrs: [],
      },
      catelist: [],
      manyTableData: [],
      onlytabledate: [],
      previewpath: "",
      prewVisible: false,
      //图片上传组件的请求头
      headerobj: { Authorization: window.sessionStorage.getItem("token") },
      addrules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      cataprops: {
        label: "cat_name",
        value: "cat_id",
        chideren: "children",
      },
    };
  },
  created() {
    this.getcarelist();
  },
  methods: {
    async getcarelist() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status != 200) {
        return this.$message.error("获取商品分类列表失败！");
      }
      this.$message.success("获取商品分类列表成功！");
      this.catelist = res.data;
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    beforetableft(activeName, oldActiveName) {
      if (oldActiveName == 0 && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择商品分类！");
        return false;
      }
    },
    async tablecilck() {
      //证明访问的是动态参数面板
      if (this.activeindex === "1") {
        const {
          data: res,
        } = await this.$http.get(
          `categories/${this.addForm.goods_cat[2]}/attributes`,
          { params: { sel: "many" } }
        );
        if (res.meta.status != 200) {
          return this.$message.error("获取参数列表失败！");
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split();
        });
        this.manyTableData = res.data;
      } else if (this.activeindex === "2") {
        const {
          data: res,
        } = await this.$http.get(
          `categories/${this.addForm.goods_cat[2]}/attributes`,
          { params: { sel: "only" } }
        );
        if (res.meta.status != 200) {
          return this.$message.error("获取商品属性失败！");
        }
        this.onlytabledate = res.data;
      }
    },
    handlePreview(file) {
      this.previewpath = file.response.data.url;
      this.prewVisible = true;
    },
    handleRemove(file) {
      const filepath = file.response.data.tmp_path;
      const i = this.addForm.pics.findIndex((x) => {
        x.pic === filepath;
      });
      this.addForm.pics.splice(i, 1);
    },
    //监听图片上传成功的函数
    handelsuccess(response) {
      const picinfo = { pic: response.data.tmp_path };
      this.addForm.pics.push(picinfo);
    },
    seepreview() {},
    add() {
      this.$refs.addruleForm.validate(async (value) => {
        if (!value) return this.$message.error("请填写必要的表单项");
        const from = _.cloneDeep(this.addForm);
        from.goods_cat = this.addForm.goods_cat.join(",");
        this.manyTableData.forEach((item) => {
          const newinfo = {
            attr_id: "item.attr_id",
            attr_value: 'item.attr_vals.join("")',
          };
          this.addForm.attrs.push(newinfo);
        });
        this.onlytabledate.forEach((item) => {
          const newinfo = {
            attr_id: "item.attr_id",
            attr_value: "item.attr_vals",
          };
          this.addForm.attrs.push(newinfo);
        });
        from.attrs = this.addForm.attrs;
        //发起请求，添加商品
        const { data: res } = await this.$http.post("goods", from);
        if (res.meta.status != 201) {
          return this.$message.error("添加分类失败！");
        } else this.$message.success("添加分类成功！");
        this.$router.push("/goods");
      });
    },
  },
};
</script>

<style lang="less" scoped>
.prive {
  width: 100%;
}
.btns {
  margin-top: 15px;
}
</style>
